Letters of Approval
from the
State of Washington
Department of Ecology
Wastewater Certification Program
BNR Process Control & Troubleshooting
Activated Sludge Module 1 ... Basic Concepts
Activated Sludge Module 2 ... Flow Patterns
Activated Sludge Module 3 ... Loading Rates
Activated Sludge Module 4 ... Microbiology
Activated Sludge Module 5 ... Troubleshooting
Sludge Dewatering Module
Preliminary & Primary Treatment
Basic Safety
Basic Hydraulics
Sludge Digestion Module
Sludge Thickening Module
Basic Math
Chlorination Principles, Safety & Process
Wastewater Treatment Overview